Furnace nose construction



L. S. LONGEN ECKER Sept. 17, 1957 FURNACE NOSE CONSTRUCTION 8Sheets-Sheet l Filed Sept. 4', 1953 I l l C 'l I 1 l l I I l l 1 l l iil INVENTOR. Lew' S. Longenecker vuu, um 15M HIS ATTORNE YS Sept. 17,1957 l.. s, LoNGENEcKER 2,806;452

FURNACE NOSE CONSTRUCTION v 8 Sheets-Sheet 2 Filed Sept. 4, 1953 .n mkTc N 0 En Ve mw o L .w e L BY im, #CML am HIS A T TORNEYS SPt 17, 1957L, s. LoNGENE'cKER y2,806,452

' FuNAcE: NosE CONSTRUCTION Fledsept. 4, 1953 l BShQatSf-Sheet 5 A VIIIIIIII/ ,HIS ATTORNEYS Sept- 17 1957 l.. s. LoNGENEcKER 2,806,452

FURNACE NOSE CQNSTRUCTION 1 Filed sept. 4, 1955 a sheets-sheet 4 Fig.8

INVENToR. Levi 5. Longenecker HLS` ATTORNEYS Sept. 17, 1957 L. S.LONGENECKER FURNACE NOSE CONSTRUCTION s sheets-sheet 5 Filed Sept. 4,1953 INVENToR. Law S. Longeneclrer Ym., www., 1s nllv HIS ATTORNEYSSept. 17, 1957 l.. s. LONGENECKER 2,806,452

FURNACE NosE CONSTRUCTION Filed Sept. 4. l1953 8 Sheets-Sheet 6 INVENTR.Lew S. Longencker HIS ATTORNEYS l.. s.' LONGENECKEKR FURNAQE NosECONSTRUCTION Sept. 1,7, 1957 8 Sheets-Sheet 7 Filed Sept.k 4, 1953 l l5INVENT.

25 Fig/4 Levi S. Longenecker H/s ATTORNEYS BYMA., he

Sept. 17, 1957 .s. LoNGENEcKER 2,306,452

FURNACE NosE CONSTRUCTION 8 Sheets-Sheet 8 Filed sept. 4. 1953 INVENTOR.Levi- S. L angenecker Bywl c H/s ATTORNEYS United States Patent C)FURNACE NSE CONSTRUCTION Levi S. Longenecker, Pittsburgh, Pa.

Appiication September 4, 1953, Serial No. 378,566

15 Claims. (Cl. 122-6) This invention relates to an improved furnacenose construction and particularly, to a construction suitable forrelatively high temperature utilizations. The invention also pertains toan improved cooling arrangement, an improved nose tile or refractoryblock construction, and to an improved support bracket construction andutilization with the nose block.

1n my United States Letters Patents 1,977,799 and 2,240,190, I havedisclosed earlier nose furnance constructions, of which the presentinvention constitutes an improvement. The nose structures disclosed bythese patents have proved very satisfactory under a normal rated furnaceoperation. However, when the furnace is pushed for greater tonnage, theembedded casting shoe tends to oxidize and become weak, thus shorteningservice life. At the present time, the life of the vertical supportbracket or anchor post casting which suspends the refractory block ortile determines the overall life of the nose construction. Thus, if thelife of the casting can be increased, the life of the structure will beextended.

Prior nose constructions were also somewhat difficult to repair due tothe type of interlock involved. To insert the last nose tile in apatching operation, its tongue had to be removed and the groove packedwith mortar, or else special patch tiles had to be used.

The present invention has been devised to meet the need for a longerlife nose construction which will have a simplified and more practicaltype of mounting and which can make effective utilization of coolingmeans, such as a circulating water pipe.

It has thus been an object of my invention to provide a new and improvedfurnance nose construction which wili have a longer service life andwhich will better stand over-capacity operation of a furnace, such as aslab reheating furnace, an open hearth furnace, etc where rather intenseheats are involved.

Another object of my present invention has been to provide an improvedsupporting arrangement for the nose block or tile of a furnaceconstruction.

A further object of my invention has been to provide a simplified andmore practical furnace nose construction which utilizes a new principlein mounting immediate nose blocks in position with respect to theirvertical support bracket or anchor post member.

A still further object has been to devise an improved form of supportbracket for employment in my construction which will co-operate withnose block in an improved manner and in a manner such that coolingmedium or fluid may be introduced for the purpose of maintaining a lowerambient operating temperature.

These and many other objects of my invention will appear to thoseskilled in the art from the illustrated embodiment and claims.

In the drawings:

Figure 1 is a side elevation in partial section of a furnace structureemploying my invention;

. Figure 2 is an end elevation on the Scale of Figure 1 ICC looking fromthe furnace side of the structure of Figure l and in the direction ofline II-II of Figure 1; in this View, a pair of transversely-abuttinglongitudinal block rows are shown and blocks above the nose portion thatform a vertical wall or apron are omitted for better illustration;

Figure 3 is a horizontal section on the scale of Figure 1 and takenalong the line III-III of Figure 1; this figure also shows a pair ofabutting block rows;

Figure 4 is an end isometric view on the scale of Figures 1 and 2 andlooking from the furnace of the structure; this iigure shows a sectionof three abutting longitudinally-extending block rows;

Figure 5 is a fragmental end isometric fragment taken from the furnaceside of the structure, on the scale of Figure l and illustrating portionof support frame structure which also provides an overhead,transversely-extending water tank;

Figure 6 is a side perspective view in elevation on the scale of Figure1 illustrating a horizontal support bracket or casting member for arefractory roof portion of my construction;

Figure 7 is an end View in elevation taken along the line Vil-V11 ofFigure 6 and on the scale of Figure 6;

Figure 8 is an isometric view of a shoulder tile or refractory blockemployed for the nose block of my construction, as illustrated in Figure1 and on an enlarged scale with respect to such figure;

Figure 9 is a view similar to and on the same scale as Figure 8, showingthe tile from a diiferentside thereof;

Figure 10 is an isometric view in elevation on the scale of Figures 8and 9 showing details of the construction of a vertical support bracketor anchor post member employed in the structure of Figure 1 and takenfrom the outer or off-furnace side of the structure;

Figure l1 is a view similar to Figure 10, but taken from the furnaceside of the construction;

Figure l2 is a side view in elevation of the vertical bracket or anchorpost member shown in Figures 10 and l1 and on twice the scale of Figure1, but on a smaller scale than Figures 10 and 11;

Figure 13 is an end View in elevation of the construction of Figure 12on the same scale as such gure and taken from the furnace side of theconstruction in the direction of the line XIII-XIII of Figure l2;

Figure 14 is a top plan View on the scale of Figure 12 and of thebracket of Figure 12;

Figure 15 is a horizontal section taken along the line XV-XV of Figure13;

Figure 16 is a side fragment in elevation illustrating the principle ofmounting nose blocks of my invention and is of twice the scale of Figure1;

Figure 17 is an isometric View of the same scale as Figure 16 andshowing details of the construction of nose blocks illustrated thereby;and

Figure 18 is an end section in elevation taken on line XVIIl-XVIII ofFigure 1 and on the scale of Figures 16 and 17.

In Figures l to 4, 1 have shown the furnace nose construction of myinvention and how it is assembled with structural framework, roof, andapron or vertical wall portions of a furnace. In these figures, 10 and11 represent structural framework which extends transversely of thefurnace and is of the type shown in my Patent 2,240,190. The structuralmember 10 has a series of vertically-downwardly projecting web portions10a located at spaced intervals therealong and defining cooling airpassageways between the members 10 and 11. Beam member 11 is made up ofwelded I-beams to define a transversely-extending overhead water headeror cooling fluid chamber and has an inwardly-projecting box bracket 12,see also Figure 5, which defines a latch opening 12a for a hanger orvertical support bracket or anchor post casting member 20 of myinvention. In these figures w represents weld metal.

Also, as shown in my Patent 2,240,190, the member 11 has an fouter ange11d-over which clamps 13 are mounted by means of bolt and nut assemblies13a. The bolt and nut asemblies 13a project upwardly from side lugportions 15 of a longitudinally, substantially horizontally, extendingroof support bracket 14, see also Figures 6 and 7. In this connection(see Figure 3,) a clamp 13 and one longitudinal support bracket member14 is employed to carry each longitudinal row of roof blocks C. Thebracket member 14 is of slightly modified construction at itsinterlocking end from the old construction of my lastmentioned patent toconform to its usage with the irnproved construction of my invention,but it is otherwise employed in a similar manner to the bracket memberof said patent, in that hangers A are entered along its longitudinalslot 14a and engage the neck portions of refractory roof blocks or tilesC. As in said patent, filler slabs B of insulating material are utilizedto fill the spaces between the neck portions of each row of tongue andgroove connected refractory blocks C. The blocks C utilize myconventional tongue and groove arrangement for assembling andpositioning them with each other. An inner end portion of the roofsection of the structure shown in Figure 1 (adjacent the nose) ismodified in accordance with my invention and end blocks 19 representsuch a modified type while the end slabs 18 have a modified positioningFigures 8 and 9 illustrate the construction of modified end blocks ortiles 19 that are employed for both vertical and roof wall connectionsto the refractory nose tiles or blocks of my invention.

To the right of Figure 1, I have illustrated an apron or vertical wallsection of the general type disclosed in my Patent 2,240,190 which alsoinvolves the utilization of hangers A, insulating filler slabs B andrefractory blocks or tiles C. A filler tile or block D and a top block Eare disclosed. As previously mentioned, the bottom or end tile 19 of thevertical wall or apron section is modified to conform with my presentinvention, see Figures 8 and 9. The bottom end slab 18' has a modifiedpositioning.

Referring particularly to Figures 8 and 9, the end refractory blocks 19employed to connect the improved nose block 33 of my invention are of mysomewhat conventional body shape from the standpoint of the provision ofa rectangular main body portion and an upwardly-projecting neck portion19. The block, as shown particu- .larly in Figure 8, also has aconventional pyramidal or inclined edge groove 19a along its major sideface to receive the conventional projecting tongue on an opposite majorside face of the next abutting but fully conventional block C. Its neck19 also has a narrow rectangular slot 19]: that is adapted to receiveone leg of a conventional hanger A. Also, as conventional, the neckportion 19 of the opposite side of the block 19 is provided with T-shapedefining slots 19e and 19d to receive the other leg portion of theconventional hanger, see A of Figure 1, and my Patent 2,240,190.

The opposite side of block 19, see Figure 9, has an inwardly-offsetmajor face portion 19e forming a shoulder rest or ledge 191c at itslower end- The portion 19e receives a vertical shoe portion 24 orhorizontal shoe portion 26 and the ledge portion 19jc receives fiange24a or 26a of a claw-like shoe part of the hanger bracket or postcasting member 20, sce Figures 1 and 4. The side face of the block 19has an intermediate, transversely-extending, semicircular, open slot orgroove 19g along its length to receive a rounded interlocking shoulder33h of a group of endwise-positioned nose blocks 33. As shown in Figurel, adjacent end blocks 19 of the roof and wall sections are back-uppositioned or retained in position with respect to the nose joint andits block 33 by the shoe portions or ledges 24 and 26 that extendoutwardly therefrom and that, as shown segregate or isolate back por- '4tions of the nose block from the roof and wall block sections.

In Figures 10 to 15, inclusive, I have particularly i1- lustrated thenovel construction of my bracket member 20. This member has acentrally-positioned, verticallyextending box part 21 provided with avertical bore 21a therethrough, a vertical slot 2lb therealong, and across entry slot 21C. The box part 21 thus serves to enter or receivehanger pieces A through its upper end cross slot 21e, so that thehangers A may be slid downwardly along slot 2lb to a proper position forsupporting an end block 19 and apron or wall block C, see Figures l and4.

The outer face of the box 21 is provided with a downturned latch portion22 and a reinforcing rib 22a. The latch portion 22 engages within theslot 12a and latches over and within the projecting box bracket 12 ofthe beam member 11, see particularly Figures l and 5. This provides avertical support for the hanger bracket 20. A pair of transverselyspaced-apart and vertically-extending ribs 23 project downwardly alongthe back side of the box 21 to abut against an outer side of the bracket12. The ribs 23 reinforce the construction and hold it in the propervertical position from the engaging latch portion 22.

The shoe part of the hanger 20 is made up of a pair of spaced-apart andoutwardly-projecting claw-like portions, one of which consists of avertically-projecting foot plate portion 24 having aninwardly-projecting and transversely-extending flange 24a, and the otherof which consists of a horizontally-projecting foot plate 26 having aninwardly-projecting and transversely-extending fiange 26a. As shownparticularly in Figures 10 and 1l, the plate portions 24 and 26 arecentrally and at their outer transverse ends, joined by diagonalportions 25 and having an angular relationship with each other. The

portions 24, 25 and 26 define a pair of windows 27 on` each side of thebracket 20. The portion 24, as shown particularly in Figure 10, has apair of transversely spaced-apart and backwardly-projecting lugs 2Swhich, as shown particularly in Figures l and 4, are adapted to abut andspace end slabs 18 of the slab block assembly B. The assembly B isemployed to fill spacing between neck portions 19 of the end blocks 19.As a result, the end slabs 18 have an air space defining relationshipwith the portion 24 of the bracket 20.

The rbracket 20 also has a pair of bracing shoulder parts made up ofangle arm pieces 29 which project from opposite narrow sides of thebox-like part 21, diagonal portions 30 which slope -backwardly therefromand are secured to the shoe plate portion 26, and vertical portions 31which project downwardly from the diagonal portions 30 and are securedto the connecting diagonal portions 25 of the shoe part. As shown inFigures l and 4, the wall end slabs 18' rest upon and are spaced byportions 30 to position them in an air space defining relationship withthe portion 26 of the bracket 20.

As shown particularly in Figures 6 and 7 and as applied to Figures 1 to3, the roof support bracket or anchor member 14 has, on opposite sidesof its inner end portion, interlocking upper and lower projections 16and 17 which fit within windows 27'and match with and latch-engage thearm pieces 29 of the bracket 20, see also Figures 2, 4 and 10. Portions16a of projections 16 rest upon or latch over a shortened bottom flange11b of the beam member 11 to support the inner end of the bracket 14 andthus, the lower end of the bracket 20, see Figures 1 and 2.

Referring particularly to Figures 16, 17 and 18, I have illustrated thenovel construction of a new form of nose block 33 which is reversible.In this connection, it will be noted that the two blocks 33 (a lowerblock F and an upper block G, see Figure 16) of the same constructionare employed with each other, one block, such as F, being first mountedin position with it projecting ledge portion 33C in abutment with theshoe plate 24 and its pivot shoulder 33d in abutment with the ange 24aof the lower claw-like shoe portion, and with its rounded tongue portion33h Within the complementary slot or groove 19g of the end block or tile19 of the roof construction. Then, the ledge portion 33o of the secondblock G may be entered beneath the flange 26a of the horizontal shoeportion 26, shoulder 33d pivoted about the inner edge of the flange 26a,and the Iblock turned or rotated downwardly into position, see the arrowof Figure 16 and also Figure 18.

f As shown in Figure 17, each block or tile 33 has a narrow side or noseend face or portion 34 of curvilinear form which is connected to anddefines apexes with a pair of narrow sides or edge faces or portions.One of the pair of edge faces or portions of each Ablock 33 has a tongueor Wing portion 36 and an offset portion (made up of portions 35C and35d) that are adapted to interit with like portions of the other blockor tile 33. The other of the pair of edge faces or portions of eachblock 33 has the ledge portion 33C that defines the pivot shoulder 33dto engage and interlock or latch with one of the clawlike shoe portionsof the shoe part of the bracket 20.

More specifically, the interiitting wing and offset edge face portion ofeach block or tile 33 has a convexly rounded abutment shoulder portion35 that is connected -by a back end face or portion to the flat orplanar ledge portion 33e` of the shoe-engaging edge face portion. Theportion 33C is connected through a substantially planar portion 3Sb tothe wing and offset portions. The wing and offset portions, in effect,split the intertting edge face into two halves between opposed majorside faces of the block 33. The wing portion 36 is defined by a concaveface portion 36a and a convex portion 36h, while the offset portion isdefined by a convex face portion 35C and a concave portion 35d. As shownparticularly in Figure 18, the lower and upper blocks F vand G are ofthe same construction, but are positioned so that the wing portion ofone block fits within the offset portion of the other block. That is,the wing 36 lies flush with or within the plane of one major side of theblock 33, see Figures 17 and 18, and lits within the offset defined bythe portions 35C and 35d of another and cooperating block 33.

The other edge face or portion (shoe interlocking face) of the block 33has an inwardly offset face portion 33a that defines shoulder 33d withthe ledge portion 33C of rectangular shape and that carries the tongueportion 3317. The tongue portion 33b is located intermediate the extentof the portion 33a and extends between opposed side faces (major) of theblock. As previously pointed out, the portion 33h is adapted to litwithin the groove 19g of an end block 19 of the wall or roofconstruction.

As shown particularly in Figure 16, after one of the edge face alignedblocks 33 has been mounted in position, the other block 33 may then bemounted by entering its pivot shoulder 33d upon the inner liange ledgeof one of the shoe portions and rotating it about such ledge as a pivotpoint into the interfitting and interlocking relationship of Figures 1and 18. This provides a praetical supporting and interlockingrelationship of the nose block.

It will also be noted, see Figure 1, that the portions 35a of the noseblocks 33 define a transverse spacing with the shoe part of the supportbracket 20, so that a cooling means or fluid pipe 37 may be positionedto extend transversely along the furnace construction to cool both thenose blocks 33 and the embedded hanger casting 20 to increase theirservice life. The new overlapping wing construction of my nose block ortile provides an easily attained interlock of opposed interl'ltting edgefaces lor portions of an adjacent pair of blocks and makes installingand patching relatively easy. If desired, the pipe 37 may `be connectedto receive circulating water from the chamber of the overhead supportmember 11.

As illustrated particularly in Figures 1 to 4, inclusive, the roof andapron or wall portions or sections of the furnace are spiked together byhangers A and by their tongue and groove connections. The roof and wallblock structure is made up of longitudinally-extending andtransversely-abutting rows of slabs B and blocks C, end slabs 18 and 18and end 'blocks 19. The blocks C of each longitudinal row of roof andwall blocks have their major sides facing longitudinally of the furnaceand their narrow sides or ends facing transversely of the furnace andare carried by the hangers A through the agency of an interlocking pairof support brackets 14 and 20 and the common loadcarrying beamstructure.

VAs shown particularly in Figure 2, the nose blocks 33 of eachrefractory row are positioned with their narrow sides or ends facinglongitudinally of the furnace and toward the major sides of the roof andwall blocks C and with their major sides facing sidewise or transverselyof the construction. I have shown three sidewise abutting nose blocks 33for each row in alignment with the major side faces of the end blocks 19and within the transverse extent of such end blocks.

As shown particularly in Figures 2, 3 and 4, I have provided a series oftransversely-abutting and longitudinally-extending refractory tile orblock rows supported by individual sets of support brackets 14 and 20,so that each row is independent of adjacent rows. The mounting of thenose block 33 is such in the construction shown that one lower noseblock F may be rst hung in position and then one upper nose block G maybe turned into posit-ion in the manner indicated in Figure 16; thisoperation may be continued until all the nose blocks are assembled.

What I claim is:

l. In an improved furnace nose construction, a load member, a roofsection carried from said load member, a wall section carried from saidload member, a support bracket having `a portion to latch on the loadmember and suspend said bracket therefrom, a roof nose end blockinterlocking with the roof section and a wall nose end blockinterlocking with the wall section, a shoe part on said support bracketand having one 4shoe portion interlocking with said roof nose end blockand another shoe portion interlocking with said wall nose end block, apair of cooperating nose blocks, one of said nose blocks having aportion interlocking with said one shoe portion Iand the other of saidnose blocks having a portion interlocking with the other of said shoeportions, said nose blocks having opposed pivot-abutment shoulders andadjacent interleaving wing portions, land each of said nose blockshaving a pivot shoulder to pivotally engage its lassociated shoe portionand turn said block thereon into an interlocking position with said shoepart and into an assembled position with the other nose block.

2. In an improved furnace construction, a load member, a roof sectioncarried from said load member, a bracket member carried from said loadmember, a wall section carried from said bracket member and having anend adjacent to an end of said roof section, said bracket member havinga pair of shoes projecting into spacing between the adjacent ends ofsaid roof and wall sections, one of said shoes position-retaining an endblock of said roof section and the other of said shoes positionretainingan adjacent end block of said wall section, at least a pair ofrefractory nose blocks forming the furnace nose and closing-olf spacingbetween the adjacent ends of the roof and wall sections, said pair ofnose blocks and said pair of shoes having cooperating latching andpivotmounting portions for said nose blocks, said nose blocks beingpositioned between said pair of shoes, and each nose block of said pairbeing pivotally carried with respect to each other by said cooperatingportions from a cooperating one of said pair of shoes.

3. A furnace construction as defined in claim 2 wherein, the nose blockof said pair have cooperating rounded edge portions :abutting each otherwhen said blocks are positioned between land carried by said shoeportions, and the nose block of said pair have cooperating wing andoffset edge portions therealong that are located ahead of sa'id'rounde'dedge portions.

4. lIn an improved furnace construction, a load member, a roof sectioncarried from said load member, a 'bracket member carried from said loadmember, a wall section carried from said bracket member and having ranend adjacent an end of said roof section, said bracket member having apair of shoe portions projecting into spacing between the adjacent endsof said roof `and wall sections, one of said shoe portionsposition-retaining an end block of said roof section and the other ofsaid shoe portions position-retaining an adjacent end block of vsaidwall section, refractory nose blocks forming the furnace nose andclosing off spacing between the adjacent ends of the roof and wallsections, said nose blocks being posiv'ti'oned between and being carriedfrom said pair of shoe portions, and said nose lblocks defining acooling uid circulating spacing along said bracket member and betweensaid pair 'of shoe portions.

5. In :an improved furnace construction, a load member, Aa yroof sectioncarried vfrom said load member, a bracket member carried from said loadmember, a wall section carried from said bracket member and having an'end adjacent to an end of said roof section, said bracket member havinga pair of shoe portions projecting into spacing between the adjacentends of said roof and wall sections, one of said shoe portionsposition-retaining 'an end block of said roof section and the other ofsaid shoe portions position-retaining an adjacent end block of said wallsection, refractory nose blocks forming the furnace nose and closing offspacing between the adjacent ends of the roof and wall sections, saidnose blocks being positioned between land being carried from 'said pairof shoe portions, a connecting portion connecting said shoe portionstogether at their inner ends, and cooling means positioned along saidconnecting portion and between it and back end portions of said noseblocks.

6. In an improved furnace construction, a load member, a roof sectioncarried from said load member, a bracket member carried from said loadmember, a wall section carried from said bracket member and having an`end adjacent to an end of said roof section, said bracket member havinga pair of shoe portions projecting into vspacing between the adjacentends of said roof and wall sections, refractory nose blocks forming thefurnace nose and closing off spacing between the adjacent ends of theroof and wall sections, said nose blocks being posijtioned between andbeing carried from said pair of shoe portions, said nose blocks havingpivot ledge portions ylatch-'engaging on and between said pair of shoeportions, and said nose blocks having oppositelypositioned roundedshoulder portions that are rolled into abutment with each other whensaid nose blocks are pivotally moved on their ledge portions into amounted relationship with each other.

7. A furnace construction as defined in claim 6 wherein, said shoulderportions are located rearwardly of said nose blocks, and said noseblocks have overlapping edgewise-extending wing portions locatedforwardly of said shoulder portions to interlock with each other andhold :said nose blocks in an edgewise-aligned mounted relationshipbetween said pair of shoe portions.

8. In an improved furnace construction, a load member, a roof sectioncarried from said load member, a bracket member carried from said loadmember, a wall section carried from said bracket member and having anend adjacent to an end of said roof section, said bracket member havinga pair of shoe-ledge portions projecting outwardly into `spacing betweenthe adjacent ends of said roof and wall sections, one of said shoe-ledgeportions extending in an endwise-limiting relation along an end block ofsaid roof section and the other of said shoeledge portions extending inan endwise-limiting relation along an adjacent end block of said wallsection, each of said shoe-ledge portions having 'a claw projectingtowards the claw of the other shoe-ledge portion, pairs of refractorynose blocks forming the furnace nose and closing-off spacing between theadjacent ends of the roof and wall sections; and each pair of noseblocks comprising, an upper nose block pivotally swung from the claw ofsaid other shoe-ledge portion and forwardly thereof to abut the end,block of said Wall section, anda lower nose block pivotally swung fromthe claw of said one shoe-ledge portion and in an edgewise-abutting andpivotally-removable relation with said other nose block and forwardlythereof to abut with the end block of said roof section.

9. A furnace construction as defined in claim 8 wherein, the one of saidshoe-ledge portions extends substantially vertically along an end blockof said roof section and the other of said shoe ledge portions extendssubstantially horizontally along an adjacent end block of said wallsection, and tongue and groove connections are provided between saidpair of nose blocks and said end blocks.

l0. VIn an improved furnace nose construction, a load member, a roofsection anda wall section, a pair of interlocking bracket members havingportions to latch over the load member and suspend one of said bracketmembers in a substantially horizontal position land suspend the other ofsaid bracket members in a substantially vertical position, said roofsection being carried from said one bracket member and said wall sectionbeing carried by said other bracket member, an angular-shaped shoe parton a lower end of said other bracket member and projecting outwardly todefine a joint between said roof and wall sections, said shoe parthaving one shoe portion along lan end block of said roof section toretain the roof section at the joint, the said shoe part having anothershoe portion along an adjacent end block of said wall section to retainthe wall section at the joint, at least a pair of nose blocks formingthe furnace nose and closingoif spacing between the end blocks of saidroof and wall sections, said nose blocks having inner end portionspivotally interlatching with and between said shoe portions to move saidnose blocks into and out of and hold them in a mounted relationship withrespect to each other.

l1. in an improved furnace nose construction, la load member, a roofsection and a wall section, a pair of interlocking bracket membershaving portions to latch over the load member and suspend one of saidbracket members in a substantially horizontal position and suspend theother of said bracket members in a substantially vertical position, saidroof section being carried from said one bracket member and said wallsection being carried by said other bracket member, an angular-shapedshoe part on a lower end of said other bracket member and projectingoutwardly to define a joint between said roof and wall sections, saidshoe part having one shoe portion along an end block of said roofsection to retain the roof section at the joint, the said shoe parthaving another shoe portion along an adjacent end block of said wallsection to retain the wall section at the joint, at least a pair of noseblocks forming the furnace nose and closing-off spacing between the endblocks of said roof and wall sections, said nose blocks having inner endportions interlatching with and between said shoe portions to hold themin a mounted relationship with respect to each other, said nose blocksdefining a spacing along and within said shoe part and between said pairof shoe portions thereof, and

cooling means positioned Within said spacing to cool said shoe part andsaid nose blocks.

l2. Vln :an improved construction, a load member, a bracket memberhaving a portion to latch on the load Vmember and suspend said bracketmember therefrom, said bracket member having a pair of claw-like shoeportions projecting in a spaced-apart and angular relationship withrespect to each other, a pair of cooperating nose blocks, one of saidnose blocks having a portion interlocking with one of said shoe portionsand the other of said nose blocks having a portion interlocking with theother of said shoe portions, at least one of said nose blocks having apivot shoulder to pivotally engage its associated shoe portion and turnthereon into an interlocking position therewith, said pair of noseblocks having opposed-rounded abutment shoulder portions for pivotmovement of the one nose block into and out of a cooperating mountedposition with the other nose block, complementary wing and offsetportions along said shoulder portions movable into an interlockingrelationship when the one nose block is pivoted into position withrespect to the other, said shoe portions having a connecting portionpositioning them in the defined angular relationship With each other,land said nose blocks in their cooperating positioning with each otherhaving a spaced-apart relationship with said :connecting portion toprovide for the introduction of cooling uid therebetween.

13. In an improved furnace construction employing a refractory noseblock to be lreversibly mounted with another block as a block pair and asupport shoe for said block pair having a pair of opposedangularly-disposed claw-like shoe portions, said nose block comprising,a refractory bodyv defining a pair of opposed substantially planar majorside faces, an outwardly-curved nose end face, and a pair of side edgefaces; said edge faces being connected at their back ends with eachother and |at their forward ends with said nose face, one of said pairof edge faces having an edgewise-outwardly-projecting Wing portion:along one of said side faces and a substantially complementaryedgewise-inwardly-ofset portion along the other of said side faces tointerflt respectively with ofset and Wing portions of the body ofanother nose block of the defined construction to provide anedgewise-interlocking block pair, the other edge face of said bodyhaving a ledge portion defining Ia pivot shoulder to turnably engage andlatch with one claw-like shoe portion of the support shoe, and both saidwing and offset portions of said body being confined fully between saidopposed major side faces, so that one block of a pair may be turnedabout the other on its pivot shoulder when block pairs of the definedconstruction are positioned in side abutment with each other.

14. An improved furnace construction employing a refractory blocksection and a pair of cooperating refractory nose blocks at one end ofthe block section, an integral support bracket having -a suspension partto carry said block section, said support bracket having an integralshoe part of relatively rigid construction at one end thereof and beyonds'aid suspension part, said shoe part having a pair of integralsubstantially rigid claw-like shoe ledge portions in anangularly-extending and substantially perpendicular relationship witheach other, pivot means for said nose blocks, y,and said shoe-ledgeportions having relatively rigid pivot anges to pivotally engage andinterlatch with said pivot means of said nose blocks Iand hold said noseblocks in a mounted relationship.

15. A furnace construction as defined in claim 14 wherein, saidshoe-ledge portions have ventilation window portions therethrough, andone of said shoe-ledge'portions has spacer lug means projectingbackwardly therefrom to space said refractory block section from saidpair of nose blocks and define ventilation spacing with said windowportions.

References Cited in the file of this patent

